The Pentair Commercial EQ Series 3-phase pool pump is now available with a TEFC (Totally Enclosed Fan Cooled) motor that is more robust and corrosion proof than standard ODP (Open Drip Proof) motors because it does not allow ambient air to enter the motor. The TEFC motor prevents corrosion from the inside out and features heavy-duty sealed bearings and ultra-strong aluminum fan for superior cooling. Self-priming and easy to service. NSF and UL approved. Compatible with Pentair’s Acu Drive XS Variable Frequency Drive.